<p>The <code>'smooth'</code> connector interpolates route points using a cubic bezier curve.</p>

<p>Example:</p>

<pre><code>link.connector('smooth');</code></pre>

<p>(<i>Deprecated</i>) For the purposes of backwards compatibility, the <code>'smooth'</code> connector may also be enabled by setting the <code>link.smooth</code> property to <code>true</code>.</p>

<pre><code>// deprecated
link.set('smooth', true)</code></pre>
